MCQs on Class 9 Maths Chapter 6 - Lines and Angles are based on the important theories and concepts involved in the chapter. All the questions are provided with answers. Students can practice these questions to revise the chapter and prepare important questions for the term 1 exam. Solve all the questions to assess your preparation level and work on your weak areas.

**Check CBSE Class 9th Maths Revised Syllabus 2021-2022**

**MCQs from CBSE Class 9 Maths Chapter 6 - Lines and Angles are given below:**

**1.** Value of *x* in the figure below is:

a) 20^{o}

b) 40^{o}

c) 80^{o}

d) 160^{o}

**Answer: (b)**

**2.** If two complementary angles are in the ratio 13 : 5, then the angles are:

a) 13*x*^{o}, 5*x*^{o}

b) 25^{o}, 65^{o}

c) 65^{o}, 25^{o}

d) 65^{o}, 35^{o}

**Answer: (c)**

**3.** The diagonals of the rectangle ABCD intersect at O. If ∠COD = 78°, then ∠OAB is:

a) 35^{o}

b) 51^{o}

c) 70^{o}

d) 110^{o}

**Answer: (b)**

**4. **If AB = *x* + 3, BC = 2*x* and AC = 4*x* – 5, then for what value of ‘*x*’, B lies on AC?

a) 2

b) 3

c) 5

d) 8

**Answer: (d)**

**5.** In the given figure, find the value of *x*:

a) 40^{o}

b) 50^{o}

c) 60^{o}

d) 80^{o}

**Answer: (b)**

**6.** In the given figure, if the angles a and b are in the ratio 2 : 3, then angle c is:

a) 90^{o}

b)126^{o}

c) 144^{o}

d) Obtuse angle

**Answer: (c)**

**7. **In the given figure, ∠1 = ∠2 then the measurements of ∠3 and ∠4 are:

a) 58^{o}, 61^{o}

b) 61^{o}, 61^{o}

c) 119^{o}, 61^{o}

d) 119^{o}, 119^{o}

**Answer: (d)**

**8.** In the figure, if *x*, *y* and *z* are exterior angles of ΔABC then *x* + *y* + *z *is:

a) 90^{o}

b) 180^{o}

c) 270^{o}

d) 360^{o}

**Answer: (d)**

**9. **In the figure, *p* || *q*. The value of *x* is:

a) 35^{o}

b) 55^{o}

c) 70^{o}

d) 110^{o}

**Answer: (b)**

**10.** In the given figure, if ∠ AOC = 50° then (∠AOD + ∠COB) is equal to:

a) 100^{o}

b) 130^{o}

c) 140^{o}

d) 260^{o}

**Answer: (d)**

**11.** In the given figure, ABCD is a rectangle in which ∠APB = 100°. The value of *x* is:

a) 40^{o}

b) 50^{o}

c) 60^{o}

d) 70^{o}

**Answer: (b)**

**12.** In the given figure, AB || CD then value of *x* is:

a) 45^{o}

b) 60^{o}

c) 90^{o}

d) 105^{o}

**Answer:** a)

**13.** In the given figure, PQ || RS and ∠ACS = 127°, ∠BAC is:

a) 50^{o}

b) 53^{o}

c) 77^{o}

d) 107^{o}

**Answer: (c)**

**14.** In figure, AB || ED, the value of *x* is:

a) 26^{o}

b) 36^{o}

c) 54^{o}

d) 62^{o}

**Answer: (a)**

**15.** In the given figure, if AOB is a line then the measure of ∠BOC, ∠COD and ∠DOA respectively are:

a) 36^{o}, 54^{o}, 90^{o}

b) 36^{o}, 90^{o}, 54^{o}

c) 90^{o}, 36^{o}, 54^{o}

d) 90^{o}, 54^{o}, 36^{o}

**Answer: (a)**

All the questions provided above are also made available in PDF format. Students can easily download these questions to practice them later in offline mode. Link to download the questions is given below:

**Also check CBSE Class 9 Maths Complete and Best Study Material for 2021-2022 Session**

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